What Is Flash Fill In Excel?
Flash Fillย in Excel is a feature where we can automatically fill a series of data, such as date, year, or fill a pattern to the selected empty cells in a flash, i.e., in a fraction of a second.
In Excel Flash Fill, first, Excel senses the pattern in the data from the previous fills of Excel. Then, when we type some characters in the adjacent cells next to it, it automatically flashes the suggested data.
For example, in cell A1 we have the cell value 1478569230, and we have modified the cell value as 1478-5692-14, which acts as a pattern.

Next, type the Flash Fill shortcut key โCtrl+Eโ.

The output is shown above, i.e., the rest of the cells are filled w.r.t the pattern automatically.
Key Takeaways
- The Flash Fill in Excel automatically fills a set pattern in the cells, such as retrieving specific details from a cell value, part of the names, dates, years, etc.
- We have multiple methods to Flash Fill, such as clicking the option from the Data tab, using the shortcut key, using the Fill Handleโs Automatic Flash Fill feature, etc.
- Using this feature, we can retrieve a part of the selected cell values, or set a pattern to combine data from the existing data to form new data.
- If we are unable to view the Flash Fill feature, make sure to enable the feature from the Excel Options windowโs Advanced tab.
How To Use Flash Fill In Excel?
We can use Flash Fill in Excel using the 2 methods, namely:
- Using the Excel Ribbon.
- Using the shortcut key.
Method #1 – Using the Excel Ribbon –
First, choose the cell value with the pattern to be filled – select the โDataโ tab – go to the โData Toolsโ group – click the โFlash Fillโ option, as shown below.

Method #2 – Using the shortcut key –
The shortcut key to Excel Flash Fill is โCtrl+Eโ.
Examples
We will consider examples to Flash Fill in Excel.
Example #1 โ Extract FY From the Invoice Number
We have data on invoice numbers, and we want to extract the FY year from the list given below. Applying many complex formulas will be quite challenging for an intermediate user. However, the โFlash Fillโ tool is a useful option.

The steps to retrieve the first year usingExcel Flash Fillare,
- First, we must set the pattern, so type the first FY year in cellB2.

- Now, select the โDataโ tab – go to the โData Toolsโ group – click the โFlash Fillโ option, as shown below.

- After typing the first FY into the cell, Excel understands the fill pattern. We can do the โFlash Fillโ in two ways.
The first way, drag the first entry until the end. Now, click theAUTOFILL option in exceland select โFlash Fillโ.Consequently, it will insert all the FY years from the invoice numbers columns, as shown below.The second way, after typing the first FY year into the cell, we must press theโCTRL + Eโkey. It will extract FY from the invoice numbers columns.

Example #2 โ Extract First Name & Last Name
The โFlash Fillโ tool will help us extract specific details as required.

We want to get the first and last names from the above list.
So, we must first type the first name in the B2 cell and the last name in the C2 cell to create a pattern.

We will now go to the B2 cell, and pressย โCTRL + Eโ.

Then, we will go to the C2 cell, and pressย โCTRL + Eโ.

The final output is shown below.

Example #3 โ Format Numbers Using Flash Fill
The Flash Fill feature extracts a portion of the cell and helps us format the cell value. Now, let us take a look at the below example. We have phone numbers, and we want to format them like this: 9056-2358-90.

First, we will type the format in the first cell to set a pattern.

Now, typeย โCTRL + Eโ.

The output is shown below.

Example #4 โ Combine Two Values Using Flash Fill
The Flash Fill tool takes the first and last names and combines them. So,ย now we have a first name and last name in two different columns. We want the full name in the next column.

To do that, we must type the required pattern name in cell C2.

Now, we must press the shortcut key to โFlash Fillโ.

The output is shown below.

Excel Flash Fill Shortcut
The shortcut for Flash Fill is,

We must set the pattern in the first output cell, then press โCtrl+Eโ for the pattern to Automatically Fill to the rest of the output cells.
Excel Flash Fill Limitations
The Flash Fill feature has its limitations too. It is very important to note them.
- The Flash Fill data tool is not dynamic. Remember, it is not a formula to change the resulting cell if any modifications to the reference cell values are made.
- The Flash Fill tool can wrongly insert the data. Take a look at the below example.

In the above image, we wanted to extract the middle name. So, we typed the middle name in the first cell and pressed the โCTRL + Eโ. But for a few names, there are no middle names, so it has extracted the first name itself.
Important Things To Note
- The Flash Fill tool works based on the pattern of the data. If there is no pattern, Excel may show the below error message.

- Ensure to select the โFlash Fillโ option while using the Fill Handle options.
Frequently Asked Questions (FAQs)
How to Turn on Flash Fill in Excel?
There may be instances where the โFlash Fillโ option is greyed out or not disabled. It may be because Excel has turned off the โFlash Fillโ option in the system.
Therefore, the steps to enable the Flash Fill in Excel are,
1. We must first go to โFileโ. Then, choose โOptionsโ.

2. Select the โAdvancedโ option on the left, and on the right, check/tick the โAutomatically Flash Fillโ option checkbox, as shown below.

Is there an alternate way to Flash Fill in Excel?
Yes, there is an alternate way to Flash Fill in Excel. We can use the โFill Handleโ option. So, when we Drag & Drop the values, we get a small box on the bottom right known as the โAuto Fill Optionsโ, which has a few options along with the โFlash Fillโ option, as shown below.

Why is the Flash Fill in Excel not working?
A few reasons why the Flash Fill in Excel may not work are,
โข When we Drag & Drop the values using the โFill Handleโ, we have not selected the โFlash Fillโ option.
โข The โAutomatically Flash Fillโ option is not enabled in the โExcel Optionsโ window. We can enable it by following the steps from FAQ 1.
Recommended Articles
This article is a guide to Flash Fill in Excel. Here we use Flash Fill using Data Tab, Shortcut key, fill handle, AutoFill, examples and downloadable template. You may learn more about Excel from the following articles: –


